Miharu's quiet but empty life changes when her husband asks her to help clean the home of his frivolous uncle, Bunta. Sensing how sexually frustrated and easily swayed she is, Bunta skillfully awakens the instincts buried deep inside her. Talked into lowering her guard and swept away by pleasure, Miharu strongly resists at first, but his beastly sex makes her experience sensations she has never known. Her body remembers the pleasure, and she repeatedly gives in to his demands.